Omicron CT SB2 User Manual

CT Analyzer User Manual
134 OMICRON
Parameters assessed for IEC 61869-2
Table 8-31: Parameters assessed for IEC 61869-2 protection CTs
Param. Description Parameter assessed for IEC 61869-2
protection CTs
standard classes OMICRON
extension
5P 10P 5PR 10PR PX PXR 2P, 3P,
4P, 6P
2PR, 3PR,
4PR, 6PR
Class Accuracy class according to standard. x x x x x x x x
Δϕ Phase deviation. x x x x
ε Current ratio error. x x x x x x
ε
c
Composite error.
xx x x x x
εt Turns ratio error (incl. in class). x x
Kr Remanence factor x x x x
Ts Secondary time constant. x x x
ALFi Accuracy limiting factor (indirect
measurement method).
xx x x x x
Ek Rated knee point e.m.f. x x
Kx Dimensioning factor (according to
IEC 61869-2).
xx
Ie Accuracy limiting secondary
excitation current.
xx
Ie1 Max. allowed secondary excitation
current at E
1
.
xx
Rct Secondary winding resistance. x x x x x
Rprim Primary winding resistance. x x x x x x x x

Omicron CT SB2 Specifications

General

Brand	Omicron
Model	CT SB2
Category	Measuring Instruments
Language	English